There are many issues that requires a majority that need to be dealt with. In minority government, there's too much partisanship,acrimony and games playing. Liberals are angry and frustrated. A recent example of the anger, is the outrageous Jihadis comment from Bob Rae. Tim Powers explains what's going on,

His comments also speak to an attitude of moral superiority still found in within the Liberal Party’s senior ranks. Many Grits still feel wronged that the public has not come to their senses and put them back in their rightful position as our nation's governors. This place called Canada is their burden and they will do as they see fit.

Liberals still haven't learned anything from their loss in 2006. That there is a perfect reason for a Conservative majority. Liberals have to learn their lesson They're still the arrogant entitled party and need a lot of work to do before voters can take them seriously again. They will do anything to get back into power even if it means banding together with the Dippers and the Bloc in an unholy alliance. We can't allow that to happen because it would mean disaster for our country.

There's a lot of uncertainty going on in the world right now from the crisis in the Middle East to the dire financial straits in the United States and Europe etc. If you don't think that any of that affects us, think again. Another problem that is about to hit the wall as each day goes by and that is pensions and health care. They are what you call unfunded liabilities and as the population ages we need to find a way to pay for them if we still want those programs. A Conservative majority government is the only option to deal with these issues and keep Canada on as even keel as possible.

To quote John Ibbitson, "The truth is, ideology aside, Canada could use a dose of majority government right now." So lets all buckle down,get to work and make it happen.
It is in the best interest of the country.
This new CPC ad signifies that we are in good hands and that we need to continue with this PM and Conservative government next time though with a majority.